package com.pomelo.tiku.managers;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;

import java.util.Stack;

/**
 * @author liuxiangwang
 * @date .
 */
public class ActivityManager {
    private static ActivityManager instance;
    private  static Context mContext;

    private static Stack<Activity> activityStack;
    private ActivityManager() {

    }

    public static ActivityManager getInstance(Context context) {
        if(instance == null) {
            synchronized (SharedPreferenceManager.class) {
                if(instance == null) {
                    mContext = context;
                    instance = new ActivityManager();
                }
            }
        }
        return instance;
    }

    public int getActivityNum() {
        return activityStack == null? 0: activityStack.size();
    }

    /**
     * 添加Activity到堆栈
     */
    public void addActivity(Activity activity) {
        if (activityStack == null) {
            activityStack = new Stack<>();
        }
        activityStack.add(activity);
    }

    /**
     * 获取当前Activity（堆栈中最后一个压入的）
     */
    public Activity currentActivity() {
        Activity activity = activityStack.lastElement();
        return activity;
    }

    /**
     * 结束当前Activity（堆栈中最后一个压入的）
     */
    public void finishActivity() {
        Activity activity = activityStack.lastElement();
        finishActivity(activity);
    }

    /**
     * 结束指定的Activity
     */
    public void finishActivity(Activity activity) {
        if (activity != null) {
            activityStack.remove(activity);
            activity.finish();
            activity = null;
        }
    }

    /**
     * 结束指定类名的Activity
     */
    public void finishActivity(Class<?> cls) {
        for (Activity activity : activityStack) {
            if (activity.getClass().equals(cls)) {
                finishActivity(activity);
            }
        }
    }

    /**
     * 结束所有Activity
     */
    public void finishAllActivity() {
        for (int i = 0, size = activityStack.size(); i < size; i++) {
            if (null != activityStack.get(i)) {
                activityStack.get(i).finish();
            }
        }
        activityStack.clear();
    }

    /**
     * 打开指定的Activity
     * */
    public void openActivity(Context context, Class<?> cls) {
        context.startActivity(new Intent(context, cls));
    }

    /**
     * 打开指定的Activity并带有Bundle传值
     * */
    public void openActivityWithBundle(Context context, Class<?> cls, Bundle bundle) {
        Intent intent = new Intent(context, cls);
        intent.putExtras(bundle);
        context.startActivity(intent);
    }


    /**
     * 得到指定类名的Activity
     */
    public Activity getActivity(Class<?> cls) {
        for (Activity activity : activityStack) {
            if (activity.getClass().equals(cls)) {
                return activity;
            }
        }
        return null;
    }

    /** * 退出应用程序 */
    public void AppExit() {
        try {
            finishAllActivity();
            System.exit(0);
            android.os.Process.killProcess(android.os.Process.myPid());
        } catch (Exception e) {

        }
    }
}
